very basic code editing!

builtins.ts

@@ -7,6 +7,7 @@ import { font } from "./font.ts";
 // import { keyDown, keyPressed, keyReleased } from "./keyboard.ts";
 import { addToContext } from "./runcode.ts";
 import { resetRepl } from "./repl.ts";
+import { COLOR } from "./colors.ts";
 
 // deno-fmt-ignore
 const sprites = [
@@ -46,13 +47,13 @@ export const drawSprite = (x: number, y: number, spr: number) => {
 	setPixelsInRect(x, y, 8, sprites[spr]);
 }
 
-export const drawChar = (x: number, y: number, char: string) => {
-	setPixelsInRect(x, y, 4, font[char]);
+export const drawChar = (x: number, y: number, char: string, color: number) => {
+	setPixelsInRect(x, y, 4, font[char].map(n => n*color));
 }
 
-export const drawText = (x: number, y: number, text: string) => {
+export const drawText = (x: number, y: number, text: string, color?: number) => {
 	[...text].forEach((char, i) => {
-		drawChar(x+4*i, y, char);
+		drawChar(x+4*i, y, char, color ?? COLOR.WHITE);
 	});
 }
 

cart_unpacked.json

@@ -1,7 +1,7 @@
 [
 	{
 		"sheet_type": "code",
-		"value": "x = code_sheet(1);\nreturn ({init: () => {y = 0}, update: () => {y += speed; if (y > 127) {y = -6}}, draw: () => {cls(); txt(x, y, 'hello world')}})"
+		"value": "x = code_sheet(1);\nreturn {\n\tinit: () => {y = 0},\n\tupdate: () => {\n\t\ty += speed;\n\t\tif (y > 127) {\n\t\t\ty = -6\n\t\t}\n\t},\n\tdraw: () => {\n\t\tcls();\n\t\ttxt(x, y, 'hello world')\n\t}\n}"
 	},
 	{
 		"sheet_type": "code",

colors.ts

@@ -0,0 +1,13 @@
+const colors = {
+	BLACK: [0, 0, 0],
+	WHITE: [1, 1, 1],
+	RED: [1, 0, 0],
+	YELLOW: [1, 1, 0],
+	GREEN: [0, 1, 0],
+	BLUE: [0, 0, 1],
+	DARKBLUE: [0.1, 0.05, 0.4],
+} as const;
+
+export const palette: Array<[number, number, number, number]> = Object.values(colors).map(val => [...val, 1]);
+
+export const COLOR = Object.fromEntries(Object.keys(colors).map((name, i) => [name, Number(i)])) as {[key in keyof typeof colors]: number};

editmode.ts

@@ -1,11 +1,179 @@
-import { clearScreen } from "./window.ts"
+import { clearScreen, fillRect } from "./window.ts";
+import { font, fontWidth, fontHeight } from "./font.ts";
+import { drawText } from "./builtins.ts";
+import { COLOR } from "./colors.ts";
+import { getCart } from "./cart.ts";
+import {getSheet, setSheet} from "./sheet.ts";
+import { K, getKeyboardString, getKeysPressed, keyDown, keyPressed, shiftKeyDown } from "./keyboard.ts";
+
+// deno-lint-ignore prefer-const
+let tab: "code" | "sprite" | "map" | "sfx" | "music" = "code";
+
+const codeTabState = {
+	scrollX: 0,
+	scrollY: 0,
+	anchor: 0,
+	focus: 0,
+	get focusX() {return indexToGrid(this.code, this.focus).x;},
+	get focusY() {return indexToGrid(this.code, this.focus).y;},
+	get anchorX() {return indexToGrid(this.code, this.anchor).x;},
+	get anchorY() {return indexToGrid(this.code, this.anchor).y;},
+	isCollapsed() {
+		return this.anchor === this.focus;
+	},
+	clampInRange(n: number) {
+		return Math.max(0, Math.min(n, this.code.length))
+	},
+	setSelection(anchor: number | {x: number, y: number}, focus?: number | {x: number, y: number}) {
+		if (typeof anchor !== "number") {
+			anchor = gridToIndex(this.code, anchor.x, anchor.y);
+		}
+		focus = focus ?? anchor;
+		if (typeof focus !== "number") {
+			focus = gridToIndex(this.code, focus.x, focus.y);
+		}
+		this.anchor = this.clampInRange(anchor),
+		this.focus = this.clampInRange(focus);
+	},
+	setFocus(focus: number | {x: number, y: number}) {
+		if (typeof focus !== "number") {
+			focus = gridToIndex(this.code, focus.x, focus.y);
+		}
+		this.focus = this.clampInRange(focus);
+	},
+	insertText(text: string) {
+		const {code, anchor, focus} = this;
+		this.code = code.slice(0, Math.min(anchor, focus)) + text + code.slice(Math.max(anchor, focus));
+		this.setSelection(Math.min(anchor, focus) + text.length);
+	},
+	// indent(char) {
+	// 	const lines = this.code.split("\n").
+	// },
+	backspace() {
+		const {code, focus} = this;
+		if (this.isCollapsed()) {
+			if (focus > 0) {
+				this.code = code.slice(0, focus-1) + code.slice(focus);
+				this.setSelection(focus-1);
+			}
+		} else {
+			this.insertText("");
+		}
+	},
+	get code() {
+		return getSheet(0);
+	},
+	set code(val) {
+		setSheet(0, "code", val);
+	}
+}
+
+const indexToGrid = (str: string, index: number) => {
+	const linesUpTo = str.slice(0,index).split("\n");
+	return {
+		x: linesUpTo[linesUpTo.length-1].length,
+		y: linesUpTo.length - 1,
+	}
+}
+
+const gridToIndex = (str: string, x: number, y: number) => {
+	const lines = str.split("\n");
+	if (y < 0) {
+		return 0;
+	}
+	if (y >= lines.length) {
+		return str.length;
+	}
+	return lines.slice(0, y).join("\n").length+Math.min(x, lines[y].length)+1;
+}
+
+const drawCodeField = (code: string, x: number, y: number, w: number, h: number) => {
+	const {
+		scrollX,
+		scrollY,
+		anchor,
+		focus,
+	} = codeTabState;
+	const {
+		x: focusX,
+		y: focusY,
+	} = indexToGrid(code, focus);
+	const {
+		x: anchorX,
+		y: anchorY,
+	} = indexToGrid(code, anchor);
+	fillRect(x, y, w, h, COLOR.DARKBLUE);
+	if (anchor === focus) {
+		fillRect(x+focusX*fontWidth-scrollX, y+focusY*(fontHeight+1)-scrollY, fontWidth+1, fontHeight+1, COLOR.RED);
+	} else {
+		fillRect(x+anchorX*fontWidth-scrollX, y+anchorY*(fontHeight+1)-scrollY, fontWidth+1, fontHeight+1, COLOR.GREEN);
+		fillRect(x+focusX*fontWidth-scrollX, y+focusY*(fontHeight+1)-scrollY, fontWidth+1, fontHeight+1, COLOR.YELLOW);
+	}
+	code.split("\n").forEach((line, i) => {
+		drawText(x-scrollX, 1+y+i*(fontHeight+1)-scrollY, line);
+	});
+}
 
 const update = () => {
-
+	if (tab === "code") {
+		const {code, anchor, focus, focusX, focusY} = codeTabState;
+		const keyboardString = getKeyboardString();
+		if (keyboardString) {
+			codeTabState.insertText(keyboardString);
+		}
+		if (keyPressed(K.ENTER)) {
+			codeTabState.insertText("\n");
+		}
+		if (keyPressed(K.TAB)) {
+			if (!shiftKeyDown()) {
+				if (codeTabState.isCollapsed()) {
+					codeTabState.insertText("\n");
+				} else {
+					// codeTabState.indent("\t");
+				}
+			} else {
+				// codeTabState.outdent(/\t| /);
+			}
+		}
+		if (keyPressed(K.BACKSPACE)) {
+			codeTabState.backspace();
+		}
+		if (keyPressed(K.ARROW_RIGHT)) {
+			if (shiftKeyDown()) {
+				codeTabState.setFocus(focus+1);
+			} else {
+				codeTabState.setSelection(focus+1);
+			}
+		}
+		if (keyPressed(K.ARROW_LEFT)) {
+			if (shiftKeyDown()) {
+				codeTabState.setFocus(focus-1);
+			} else {
+				codeTabState.setSelection(focus-1);
+			}
+		}
+		if (keyPressed(K.ARROW_DOWN)) {
+			if (shiftKeyDown()) {
+				codeTabState.setFocus({x: focusX, y: focusY+1});
+			} else {
+				codeTabState.setSelection({x: focusX, y: focusY+1});
+			}
+		}
+		if (keyPressed(K.ARROW_UP)) {
+			if (shiftKeyDown()) {
+				codeTabState.setFocus({x: focusX, y: focusY-1});
+			} else {
+				codeTabState.setSelection({x: focusX, y: focusY-1});
+			}
+		}
+	}
 }
 
 const draw = () => {
-	clearScreen()
+	clearScreen();
+	if (tab === "code") {
+		drawCodeField(getSheet(0), 0, 8, 128, 112);
+	}
 }
 
 export const editmode = {

font.ts

@@ -14,6 +14,9 @@
  * 96 chars * 9 bytes = 
  */
 
+export const fontWidth = 4;
+export const fontHeight = 6;
+
 // deno-fmt-ignore
 export const font: {[key: string]: Array<number>} = {
 	"A": [
@@ -456,6 +459,14 @@ export const font: {[key: string]: Array<number>} = {
 		0, 0, 0, 0,
 		0, 0, 0, 0,
 	],
+	"\t": [
+		0, 0, 0, 0,
+		0, 0, 0, 0,
+		0, 0, 0, 0,
+		0, 0, 0, 0,
+		0, 0, 0, 0,
+		0, 0, 0, 0,
+	],
 	"<": [
 		0, 0, 0, 1,
 		0, 0, 1, 0,

keyboard.ts

@@ -1,3 +1,5 @@
+import { font } from "./font.ts";
+
 const keyboard = new Map<number, {first: boolean, repeat: boolean, held: boolean}>();
 
 export const K = {
@@ -126,3 +128,21 @@ export const getKeysPressed = () => {
 	}).map(([key]) => key);
 	return result;
 }
+
+export const getKeyboardString = () => {
+	let str = "";
+	for (const key of getKeysPressed()) {
+		let char = String.fromCharCode(key).toLowerCase();
+		if (shiftKeyDown()) {
+			if (char in shiftMap) {
+				char = shiftMap[char as keyof typeof shiftMap];
+			} else {
+				char = char.toUpperCase();
+			}
+		}
+		if (char in font) {
+			str += char;
+		}
+	}
+	return str;
+}

repl.ts

@@ -3,6 +3,7 @@ import { getKeysPressed, shiftKeyDown, shiftMap, K } from "./keyboard.ts";
 import { font } from "./font.ts";
 import { addToContext, evalCode } from "./runcode.ts";
 import { clearScreen, fillRect } from "./window.ts";
+import { COLOR } from "./colors.ts";
 
 const lineHeight = 6;
 
@@ -41,6 +42,7 @@ addToContext("print", print);
 addToContext("printVal", printVal);
 
 const update = () => {
+	// TODO: model this after the newer editmode.ts version using getKeyboardString
 	for (const key of getKeysPressed()) {
 		let char = String.fromCharCode(key).toLowerCase();
 		if (shiftKeyDown()) {
@@ -108,7 +110,7 @@ const update = () => {
 
 const drawTextAbove = () => {
 	textLinesAbove.forEach((line, i) => {
-		fillRect(0, 1+i*lineHeight, 4*(line.length+1)+1, lineHeight+1, 0);
+		fillRect(0, 1+i*lineHeight, 4*(line.length+1)+1, lineHeight+1, COLOR.BLACK);
 		drawText(-1, 1+i*lineHeight, line);
 	});
 }
@@ -118,8 +120,8 @@ const draw = () => {
 
 	drawTextAbove();
 
-	fillRect(0, 1+textLinesAbove.length*lineHeight, 4*(2+maxLineLen+1)+1, lineHeight+1, 0);
-	fillRect((2+index)*4, textLinesAbove.length*lineHeight+1, 4, lineHeight-1, 3);
+	fillRect(0, 1+textLinesAbove.length*lineHeight, 4*(2+maxLineLen+1)+1, lineHeight+1, COLOR.BLACK);
+	fillRect((2+index)*4, textLinesAbove.length*lineHeight+1, 4, lineHeight-1, COLOR.RED);
 	drawText(-1, 1+textLinesAbove.length*lineHeight, "> "+currentLine);
 }
 

sheet.ts

@@ -3,10 +3,15 @@ import { runCode, addToContext } from "./runcode.ts";
 
 export type SheetType = "code" | "spritesheet" | "map" | "sfx" | "patterns" | "fonts";
 
-const getSheet = (n: number) => {
+export const getSheet = (n: number) => {
 	return getCart()[n].value;
 }
 
+// deno-lint-ignore no-explicit-any
+export const setSheet = (n: number, type: SheetType, value: any) => {
+	return getCart()[n] = {sheet_type: type, value};
+}
+
 export const codeSheet = (sheet: number) => {
 	const code = getSheet(sheet);
 	return runCode(code);

window.ts

@@ -4,6 +4,7 @@ import {
 	gl,
 } from "./deps.ts";
 export {mainloop} from "./deps.ts";
+import { palette } from "./colors.ts";
 
 const window = createWindow({
 	title: "Faux",
@@ -113,16 +114,6 @@ const px = (x: number, y: number) => {
 	];
 }
 
-const palette: Array<[number, number, number, number]> = [
-	[0, 0, 0, 0],
-	[1, 1, 1, 1],
-	[0, 0, 0, 1],
-	[1, 0, 0, 1],
-	[1, 1, 0, 1],
-	[0, 1, 0, 1],
-	[0, 0, 1, 1],
-];
-
 const paletteX6 = palette.map(rgba => [...rgba, ...rgba, ...rgba, ...rgba, ...rgba, ...rgba]);
 
 const c = (n: number) => {